An operator named for this property is proportional to a product of Dirac gamma matrices. (0[1])Jellium is a model in which a form of this property forms a uniform background. Landau quantization describes the motion of massive particles with this property (0[1])as they undergo cyclotron resonance. The two main types of semiconductor (*) doping are named for forms of this property. (10[5])Cronin and Finch won a Nobel prize for observations (10[1])of a “violation” of this property (0[1])and parity. (10[5]0[2])Overbars (10[1])represent the conjugation of this property, (10[1]0[1])and are thus used (10[1])to denote antiparticles. The “elementary” (10[1])quantum (10[1])for this (10[1])property was first calculated by Millikan’s (10[1])oil drop (10[1])experiment. (10[5]0[1])For 10 points, (10[1])name this (10[1])property measured in Coulombs. (10[1])■END■ (10[6]0[1])